James f



(No Model.)

J. F. WINCHELL.

GRUSHING AND GRINDING MILL. No. 461,789. Patented Oct. 20,1891.

I lllml lml llllllllillllllllllllllllli UNITED STATES PATENT OFFICE...

JAMES F. IVINOHELL. OF SPRINGFIELD, OHIO, ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, TO THE FOOS MANUFACTURING COMPANY AND THE 0. S. KELLYCOMPANY, OF SAME PLACE.

CRUSHING AND GRINDING MILL.

SPECIFICATION forming part of Letters Patent No. 461,789, dated October20, 1891.

Original application filed April 2, 1888, Serial No. 269,294. Dividedand this application filed April 1, 1889. Serial No. 305,592.

(No model.)

To all whom it may concern.-

Be itknown that 1, JAMES F. WINoHELL, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Crushing and GrindingMills, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to certain new and useful improvements incrushing and grinding mills for reducing corn-cobs with and without thecorn and shuck on them, roots, bark, bones, cotton-seed and linseed mealcakes, and other-substances, first to a broken state, secondly to afiner state, and lastly to a granular state. It is designed as animprovement upon the mill for which Letters Patent were issued March 15,1887, No. 359,588, for crushing and grinding mills, to the FoosManufacturing Company, of Springfield, Ohio, my assignee of that and thepresent invention.

The object of my present invention is to secure the proper partialreduction of the material fed into the hopper by the crushing,disintegrating, and cutting-like action of crushing and feedingmechanism having peripheral flanges, whethersuch flanges coact with eachother or coact with a fixed part or parts of the mill, or both, ashereinafter more fully pointed ou In the accompanying drawings, forminga part of this specification, and on which likereference-lettersindicatecorresponding parts, Figure 1 represents a planview of the essential part of a hopper with my improved crushers mountedtherein and suitable gearing applied thereto for conveying motion to thecrushers, and Fig. 2 a sectional view of the hopper and crushers on theline mo of Fig. 1.

The letter A designates the upper portion of the hopper or the upperportion of the mill-casing, preferably of the type illustrated, andconstructed with Ways B, in which is fitted to slide a cut-off C-for thepurpose of regulating the quantity of material that may pass downwardfrom the crushers to the lower mechanism of the mill, and for thefurther latter.

purpose of affording a rest or support, by which more or less of thematerial may be caught and subjected to the further action of thecrushers after having been passed between them.

The letter D designates the crusher-shafts, upon which are cast orotherwise secured spiral flanges E of such pitch and other contour asmay be preferred and according to the material to be acted upon andother conditions incident to the particular circumstances or classes ofwork. These shafts and flanges constitute what I term the crushers. Theshafts are mounted in suitable bearings in the hopper A or othersuitable portion of the mill-casing and are provided with pinions F ofequal or unequal diameter, preferably the These pinions intermesh sothat rotary motion imparted to either crusher-shaft will be therebyimparted to the other. One of the crusher-shafts is additionallyprovided with a gear-wheel G, which is designed to receive rotary motionfrom the main shaft of the mill when theseimprovements are mounted uponthe latter.

In operation the material (as, for instance, corn-cobs, shelled orunshelled, and with or Without the shucks) is thrown into the hopper andcaught by the flanges E of the crushers as they rotate toward eachother. This action serves to draw the cobs inward and downward to crushor disintegrate them and to cut and tear the shucks into fragments andshort pieces of varying lengths, which mix up with the broken cobs andgrain. This mass of material in this disintegrated state is fed by theflanges along the cut-off O and is forced or fed over the inner end ofthe cutoff, whence it descends to the lower part of the mill. Thedifferential speed of the crushers when different-sized pinions F areused tend to'produce more or less of a draw out, which is veryeffective, particularly in the disintegration and chopping up of theshucksand other fibrous material. The spiral contour of the flanges alsocauses them to coact, irrespective of their relative speed, with adraw-cut action with the fixed parts of the mill,

as the ribs or cleats H. (More clearly seen in Fig. 2.) This actionassists in the degree and rapidity with which the fibrous material isdisintegrated and chopped up. This feature is particularly Valuable infreeing the crushers of any fibrous parts, as strips of shock which maylodge upon the flanges and tend to accumulate, for the fixed part orparts of the mill in proximity to which the flanges rotate oppose suchpieces and cause them to be cut and stripped from the crnshers.

The present application is a division of an application filed by meApril 2, 1888, Serial No. 269,294, for crushing and grinding mills.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- In a mill, the combination,with the upper portion of the casing or the hopper thereof, of twocrushers mounted therein and each having spiral flanges which coact witheach other when the crnshers are rotated, a pinion on eachcrusher-shaft, said pinions being 1ntergeared, a gear-Wheel on one ofsaid shafts, fixed part or parts of the mill in close progrimity to saidflanges, and acut-olf mounted in said casing beneath the crushers withwhich the flanges coact to feed the material, 850.

In testimony whereof I aflix my signature in presence of two Witnesses.

JAMES F. XVINOHELL.

Witnesses:

WARREN HULL, CHASE STEWART.

